#include<iostream>
#include<vector>
using namespace std;
void practice_9_38();
int main()
{
	practice_9_38();
	return 0;
}
void practice_9_38()
{
	vector<int> ivec(10,1);
	cout<<ivec.size()<<" "<<ivec.capacity()<<endl;
	ivec.push_back(4);
	cout<<ivec.size()<<" "<<ivec.capacity();
}